wifi_sync: add WifiConfigDelegate

components/wifi_sync/wifi_config_delegate_factory_chromeos.cc

Index: components/wifi_sync/wifi_config_delegate_factory_chromeos.cc
diff --git a/components/wifi_sync/wifi_config_delegate_factory_chromeos.cc b/components/wifi_sync/wifi_config_delegate_factory_chromeos.cc
new file mode 100644
index 0000000000000000000000000000000000000000..50f7a05724637eacd4bc0450fc4a58a167c0a032
--- /dev/null
+++ b/components/wifi_sync/wifi_config_delegate_factory_chromeos.cc
@@ -0,0 +1,75 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/wifi_sync/wifi_config_delegate_factory_chromeos.h"
+
+#include <string>
+
+#include "base/files/file_path.h"
+#include "base/logging.h"
+#include "base/memory/singleton.h"
+#include "chromeos/login/login_state.h"
+#include "chromeos/network/network_handler.h"
+#include "components/wifi_sync/wifi_config_delegate_chromeos.h"
+#include "content/public/browser/browser_context.h"
+
+namespace wifi_sync {
+
+namespace {
+
+std::string GetChromeOsUserHash(
+    content::BrowserContext* context, bool use_login_state) {
+  if (use_login_state) {
+    auto login_state = chromeos::LoginState::Get();
+    DCHECK(login_state->IsUserLoggedIn());
+    DCHECK(!login_state->primary_user_hash().empty());
+    // TODO(quiche): verify that |context| is the primary user's
+    // context.
+    return login_state->primary_user_hash();
+  } else {
+    return context->GetPath().BaseName().value();
+  }
+}
+
+}  // namespace
+
+// static
+WifiConfigDelegateFactoryChromeOs*
+WifiConfigDelegateFactoryChromeOs::GetInstance() {
+  return Singleton<WifiConfigDelegateFactoryChromeOs>::get();
+}
+
+void WifiConfigDelegateFactoryChromeOs::SetUseLoginState(bool use_login_state) {
+  use_login_state_ = use_login_state;
+}
+
+scoped_ptr<WifiConfigDelegate>
+WifiConfigDelegateFactoryChromeOs::BuildInstanceFor(
+    content::BrowserContext* context) {
+  // It is safe to pass the WifiConfigDelegate a bare pointer to the
+  // managed_network_configuration_handler, as long as the
+  // WifiConfigDelegate is owned by a KeyedService. The reasoning is
+  // as follows: a) |managed_network_configuration_handler| is owned
+  // by the chromeos::NetworkHandler singleton, b) the
+  // chromeos::NetworkHandler singleton is owned by the
+  // chromeos::internal::DBusServices singleton, c) the
+  // chromeos::internal::DBusServices singleton is guaranteed to
+  // outlive all KeyedServices.
+  auto network_handler = chromeos::NetworkHandler::Get();
+  return make_scoped_ptr(
+      new WifiConfigDelegateChromeOs(
+          GetChromeOsUserHash(context, use_login_state_),
+          network_handler->managed_network_configuration_handler()));
+}
+
+// Private methods.
+
+WifiConfigDelegateFactoryChromeOs::WifiConfigDelegateFactoryChromeOs()
+    : use_login_state_(true) {
+}
+
+WifiConfigDelegateFactoryChromeOs::~WifiConfigDelegateFactoryChromeOs() {
+}
+
+}  // namespace wifi_sync